PHL - IDA

$271 Find Cheap Flights from Philadelphia to Idaho Falls

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Idaho Falls departing on 4/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Idaho Falls

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Idaho Falls, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Idaho Falls, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$359
Typical prices: $379-$454
Delta
Sat 5/9Wed 5/13
PHL - IDA • 1 stop
Cheapest one-way
$271
United Airlines
Wed 4/8
PHL - IDA • 1 stop
Top airlines
Cheapest • from $359 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Philadelphia and Idaho Falls. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $398 (round-trip)
Shortest trip • 6h 49m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 34% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Idaho Falls!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Philadelphia to Idaho Falls (PHL-IDA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Idaho Falls that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to Idaho Falls

Sat, May 9 - Wed, May 13
Delta Logo
6:00 pm - 10:42 pm
PHL
-
IDA
6h 42m
1 stop
Delta Logo
6:54 pm - 6:10 am
IDA
-
PHL
9h 16m
1 stop
$359Delta
Wed, Apr 22 - Tue, Apr 28
American Airlines Logo
3:58 pm - 11:39 pm
PHL
-
IDA
9h 41m
1 stop
American Airlines Logo
7:48 am - 11:42 pm
IDA
-
PHL
13h 54m
2 stops
$364American Airlines
Sat, Sep 5 - Fri, Sep 11
United Airlines Logo
3:55 pm - 9:03 pm
PHL
-
IDA
7h 08m
1 stop
United Airlines Logo
2:30 pm - 11:37 pm
IDA
-
PHL
7h 07m
1 stop
$369United Airlines
Sat, Aug 22 - Fri, Aug 28
American Airlines Logo
12:04 pm - 9:22 pm
PHL
-
IDA
11h 18m
2 stops
American Airlines Logo
12:46 pm - 11:59 pm
IDA
-
PHL
9h 13m
1 stop
$374American Airlines
Wed, Apr 22 - Tue, Apr 28
Delta Logo
7:15 am - 12:26 pm
PHL
-
IDA
7h 11m
1 stop
Delta Logo
6:58 pm - 5:59 am
IDA
-
PHL
9h 01m
1 stop
$384Delta
Wed, Apr 22 - Tue, Apr 28
Delta Logo
7:15 am - 12:26 pm
PHL
-
IDA
7h 11m
1 stop
Delta Logo
6:58 pm - 9:25 am
IDA
-
PHL
12h 27m
2 stops
$389Delta
Wed, Apr 22 - Tue, Apr 28
Delta Logo
7:15 am - 12:26 pm
PHL
-
IDA
7h 11m
1 stop
Delta Logo
6:58 pm - 5:59 am
IDA
-
PHL
9h 01m
1 stop
$404Delta
Wed, Aug 19 - Tue, Aug 25
Delta Logo
7:00 am - 2:27 pm
PHL
-
IDA
9h 27m
1 stop
Delta Logo
6:50 pm - 5:43 am
IDA
-
PHL
8h 53m
1 stop
$410Delta
Sat, Aug 22 - Fri, Aug 28
Delta Logo
11:45 am - 6:14 pm
PHL
-
IDA
8h 29m
2 stops
Delta Logo
6:50 pm - 5:43 am
IDA
-
PHL
8h 53m
1 stop
$415Delta
Sat, Sep 5 - Fri, Sep 11
American Airlines Logo
6:00 am - 12:10 pm
PHL
-
IDA
8h 10m
1 stop
American Airlines Logo
12:12 pm - 10:55 pm
IDA
-
PHL
8h 43m
1 stop
$420American Airlines
Booking Insights

KAYAK's insights & trends for Philadelphia to Idaho Falls flights

Get data-powered insights and trends into flights from Philadelphia to Idaho Falls to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Philadelphia to Idaho Falls?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Philadelphia to Idaho Falls departing in May.

What is the cheapest month to fly from Philadelphia to Idaho Falls?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Philadelphia to Idaho Falls, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Philadelphia to Idaho Falls is May, where tickets cost $398 (return) on average. On the other hand, the most expensive months are April and June, where the average cost of round-trip tickets is $888 and $733 respectively.

Good to know

Low seasonJanuary
Cheapest flight$271
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 16% lower on average.
Flight from Philadelphia to Idaho Falls

When to book flights from Philadelphia to Idaho Falls

Are your dates flexible? Find out the best times to travel from Philadelphia to Idaho Falls based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Philadelphia to Idaho Falls

  • What is the cheapest flight from Philadelphia to Idaho Falls?

    In the last 3 days, the lowest price for a flight from Philadelphia to Idaho Falls was $271 for a one-way ticket and $359 for a round-trip.

  • Do I need a passport to fly between Philadelphia and Idaho Falls?

    A passport is not required to fly from Philadelphia to Idaho Falls.

  • Which aircraft models fly most regularly from Philadelphia to Idaho Falls?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Philadelphia to Idaho Falls?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Philadelphia and Idaho Falls, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Philadelphia to Idaho Falls, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Philadelphia to Idaho Falls are Delta and United Airlines. With an average price for the route of $513 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $657 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Philadelphia to Idaho Falls?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to Idaho Falls.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to Idaho Falls?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Idaho Falls from Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Philadelphia to Idaho Falls?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Idaho Falls with an airline and back to Philadelphia with another airline. Booking your flights between Philadelphia and IDA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to Idaho Falls?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Idaho Falls from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Philadelphia to Idaho Falls

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to Idaho Falls. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to Idaho Falls? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8314 reviews
7.8Entertainment
8.1Boarding
7.2Food
8.5Crew
7.9Comfort
Airline reviews

Entertainment is ok! Boarding and seat with zone is terrible. I paid for the seats but you didn’t give me what I paid for which is exit isles.

4.0 OkayAnonymous, Mar 2026
BHM - ATL
Read more Delta reviews

Entertainment is ok! Boarding and seat with zone is terrible. I paid for the seats but you didn’t give me what I paid for which is exit isles.

the crew cancel the morning service due to the weather. Then the flight got deverted to Nashville . we were on the ground for over two hours the only gave us water once... no food or any snacks.... the crew should have handled better and offered something to passengers.

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

Delta needs to step its game up get a more reliable internet service. Internet service was non-existent for this flight.

Mechanical Delay of over an hour with multiple gate changes. Entertainment system down for rejuvenation.

I had a flight cancel and had it rerouted. When the rerouted they put me at a window seat instead of an isle. It was hard sitting by the window because the couple with masks on were making out. I get motion sickness which is why I need to have the isle seat.

NEVER MADE THE FLIGHT BECAUSE DELTA SAID THEY CAN NOT

THEY FAILED ME AND I NEVER GOT ON THE FLIGHT BECAUSE IT WAS SO DELAYED! I ENDED UP HAVING TO PAY OUT OF POCKET FOR A HOTEL AND STAY IN NASHVILLE TO CATCH A FLIGHT FOR THE FOLLOWING DAY. DELTA IS POOR CUSTOMER SERVICE>

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

My flight was canceled a few hours before boarding. I was rebooked on Copa airlines and missed an important meeting .

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

Experience was great - no complaints. Took off on time, landed early. Got to the gate relatively quickly - took a little bit of extra time to deplane but nothing excessive.

Economy plus was so cramped I could not use my laptop. It was beyond bad.

OK, we were delayed and had to de plane and reboard.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

Both our flights were delayed. Almost didn’t get in the second flight. Staff was rude to the bone.

Both my flight where delayed Had 25min to make it to my transfer flight

Everything was on time and service on the flight was great!

Wifi Bluetooth features for watching in flight movie was horrible. Screen kept blacking out no connection of sound although it said connected. Other than that smooth trip .

Half of the TSA checkpoints at PHL are closed. Also, there is no standby for first class passengers. You can only standby for coach. Very dated policy and inconsistent with peers.

It would have been nice if American tried to care.

Delayed initially because they couldn’t print the flight details. Poor instruction on delay. When I got on the plane the flight attendant argued with me about whether my carry on would fit (it did, although she didn’t acknowledge that). No greeting (other than arguing with me) getting on or off the plane.

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

They are always late and seats was also not having working charger

This flight captain and crew were amazing, started ahead of time of departure and reached 30 mins before arrival time. Amazing!

Long delays, lack of information about the status of the flight. The flight was delayed 4 times.

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

Delays to take off and to leave the plane after landing added a lot of time to this flight.

The Phildalphia to Allentown portion was a BUS, not a plane. All was as expected.

Everything you need to know for your flight from Philadelphia to Idaho Falls

Information on your arrival and departure airports